Physics question and answers for July 29, 2024
- Q Which of the following is incorrect about electrostatic force Only one correct answer A B C D It is conservative It is a central force Electrostatic field lines never intersect...
- Q 47 The velocity versus time graph of a body moving in a straight line is as shown in the figure below v m s C t s 1 The distance...
- Q 113 In Davisson Germer experiment the decrease of the wavelength of the electron wave was done by 1 keeping the same potential difference between anode and filament 2 decreasing the...
- Q The de Broglie wavelength of an electron in first orbit of hydrogen atom is equal to Only one correct answer A Diameter of the orbit B C Perimeter of the...
- Q 106 The ratio of the pressure P on a swimmer 10 m below the water surface of a lake to that of the pressure on the surface of water P...
- Q A wheel of mass 10 kg and radius 0 8 m is rolling on a road with an angular speed 20 rads without sliding The moment of inertia of the...
- Q 2 points possible graded A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 807 N on hi The mass...
- Q 120 A non conducting ring of radius R has charge Q distributed over it If it rotates with an angular velocity to the equivalent current is Ragg Ko L o...
- Q Sop Boud oss doo h 500 of 50 borge wood and 5 a 50 50 60 bed so b ordu oro 5 aus 5035 50000 Options b 2a b 2...
- Q 3 3 Qa TCE X 4 Zero 1 Parabola 2 Circle 3 Pair of straight lines 4 Hyperbola fie 6 8 The locus of points such that electric field due...
- Q Draw an orbital energy level diagram like those in Fig 23 23 showing the configuration of the d electrons on the metal ion in each of the following complexes a...
- Q pject starts from rest from point P and comes to rest at point an acceleration 1 m s and for the remaining with retardation alue of distance PQ on same...
- Q A gas consisting of rigid molecules expands adiabatically such that r m s speed of its molecules becomes half The ratio of final and initial volumes of the gas is...
- Q Question Number 98 Question Id 4557344738 Question Type MCQ Display Question Number Yes Single Line Question Option No Option Orientation Vertical Certain quantity of heat is supplied to a monatomic...
- Q 8 A gas is compressed at a constant pressure of 50 Nm 3 3 from a volume of 10 m to a volume of 4 m Energy of 10 J...
- Q Consider a circular wheel rolling no slip along a flat surface The wheel has radius 0 1 m and is rotating clockwise at 2 rad s What is the direction...
- Q L ms in the plane of the table collide with the two ends of the rod simultaneously as shown in the figure The marbles stuck to the rod and continue...
- Q During an a particle decay from a nuclei at rest of atomic mass 284 the wavelength of the wave associated with the a particle is X Then the wavelength of...
- Q A small body a starts sliding from the height h down an inclined groove passing into a half circle of radius h 2 Assuming the friction to be negligible find...
- Q A cubical block of side a is placed on the ground A particle is projected from ground with minimum velocity vo such that it crosses over the cube as shown...
- Q A particle having mass mand charge qis projected into a region having perpendicular magnetic field as shown If the width of the field d mv 29B then the deviation of...
- Q Figure shows an ideal spring block system force constant of spring is k which has been compressed by an amount Xo If x is instantaneous deflection of spring from its...
- Q 118 A galvanometer of resistance 99 2 requires 5 mA current for full scale deflection It can be converted into an ammeter of range 0 5 A by connecting a...
- Q A cylindrical solid rod made up of material of refractive index is given A light beam enters from one circular end of the cylinder and comes out just brushing the...
- Q 117 A bar magnet of magnetic moment 20 3 T lies aligned with the direction of a uniform magnetic field of 0 25T The amount of work required to turn...
- Q A thermally insulated cubical box of side length 20 cm and wall thickness 2 cm containing 2 kg of ice is closed on all sides The mass of ice melted...
- Q is instantaneous angle which joining the particle and the centre of the loop makes with the vertical as shown then identify the correct statement s related o the normal reaction...
- Q a b 1 along x axis 3 along z axis X A semi circular current carrying loop is placed near an infinite straight wire with its section ab parallel to...
- Q time as ortional 0 12 4 1296 km 22 The position x of particle moving along x axis varies with time t as x Asin cof where A and are...
- Q 53 A short dipole of dipole moment p is placed with axis perpendicular to a long thin uniformly charg rod with linear charge density at a distance r F the...
- Q In the figure shown the wavelength and frequency of photons in transition a b and c for hydrogen atoms are a Ab Ac and va V and vc respectively then...
- Q When a rubber string is stretched through a distance x the restoring force developed has a magnitude px qx x where p q and r are constants Work done in...
- Q article of mass m is released from a height H on a smooth curved surface which ends into a vertical loop of radius R as shown R 0 is instantaneous...
- Q P 555 55 55 55 ms 56 Vrms 56550 3366 300 mms 5 37 Options 1 3 Vrms Vims 3 3
- Q A car of mass m accelerates on a level smooth road when a constant power p is delivered to it If the velocity of the car at any instant is...
- Q 4 Its velocity must be constant 13 The position of a particle moving along x axis is given by x 101 21 Then the time at which it will momently...
- Q Board Competitive Exams Motion in a Straight Line 131 29 Two objects A and B are moving with velocities and va respectively along positive x axis if v V then...
- Q 119 Two concentric coils of 10 turns each are placed in the same plane Their radii are 20 cm and 40 cm and carry 0 2 amp and 0 3...
- Q The upper end of the uniform chain of linear mass density u is lowered with a speed v as shown the figure Find the reaction force offered by the ground...
- Q SolveLancer Test Select correct option after reading given statemnets carefully 1 Ideal gas particles does not obey the Newton s laws of motion ii The viscosity of gases is proportional...
- Q Current through an inductor is increasing according to 2t du Variation of rate of increment of its energy with time f is correctly shown in the graph Only one correct...
- Q A moves with 65 km h while B is coming ba A with 80 km h The relative velocity of B respect to A is A 15 km h C...
- Q White light containing wavelengths from 410 nm to 750 nm falls on a grating with 7700 slits cm T Part A How wide is the first order spectrum on a...
- Q The self inductance of solenoid if the space inside it is filled with a material of relative permeability is Symbols have their usual meaning OL A Hy OL H A...
- Q Your JEE MAIN FULL TEST 18 starts at 10 30 am today It will be available till today midnight 12 o clock You can start the exam anytime before that...
- Q A parallel plate capacitor is connected with a resistance R and a cell of emf e as shown in figure The capacitor is fully charged Keeping the right plate fixed...
- Q Two discs of radii Rand 2R are moving with velocities vand 2v in opposite directions on a conducting platform as shown in the figure If magnetic field Bis applied on...
- Q 1 VA Va 3 VA VB 4 VVB The relative velocity of two objects A and B is 10 m s If the velocity of object A is 40 m...
- Q A small sphere of mass mand having charge qis suspended by a silk thread of length in a uniform horizontal electric field If it stands at a distance x from...
- Q Electrons flow through a 1 7 mm diameter aluminum wire at 1 9x10 m s Part A How many electrons move through a cross section of the wire each d...
- Q 22 Two objects A and B are moving with velocities V and va respectively in the same direction The magnitude of relative velocity of Aw r t Bis 1 VA...
- Q For a particle constrained to move along x axis potential energy is given by U 4x 3x Then A The positions corresponding to equilibrium are x 0 and x B...
- Q 2 A plate clutch having a single driving plate with contact surfaces on each side is required to transmit 110 kW at 1250 r p m The outer diam eter...
- Q C 1 D same as of radius of curvature A light of ray incidents normally on one side of equilateral prism If refractive index of prism 1 5 then deviation...
- Q A cyclist is 24 metres behind a bus If bus starts from rest with constant acceleration of 2m s while at same time cyclist moves with constant speed of 10m...
- Q body is at rest or moving at a constant speed in a straight line it will remain at rest or keep moving in a straight line at constant speed unless...
- Q you certainly draw Answer A B C D Your Attempt Correct answer Rate this question If Fe Fm for like charges and F Fm for unlike charges both the spheres...
- Q 1 A ship A is moving Westwards with a speed of 10 kmh and a ship B 100 km South of A is moving Northwards with a speed of 10kmh...
- Q A ladder stands on a frictionless floor and leans against a frictionless wall It is initially held motionless with its bottom end an infinitesimal distance from the wall It is...
- Q Two balls are projected from top of a tower height 120 m one with initial upward velocity c 36 km h and other with initial downward velocit of 36 km...
- Q When two cells of emf E and E are connected in series the null point across potentiometer wire i obtained at 60cm When polarity one cell is reversed null point...
- Q A metallic rod AB moves on a V shaped conducting wire with speed v as shown in figure such that at given instant of time OA OB L If magnetic...
- Q A boat which has a speed of 5 km hr in still wate crosses a river of width 1 km along the shortes possible part in 15 minutes The velocity...
- Q Two circular coils have their centres at the same point The mutual inductance between them will be maximum when their axis is O At 45 to each other At 60...
- Q 5 Two identical condensers are first connected in series and then in parallel If the equivalent capacity in parallel grouping is 40 F equivalent capacity in series group ing is...
- Q The coefficient of mutual inductance between two coils depends upon O Geometry of coils O Orientation of colls O Medium between coils O All of these 6 11 16 21...
- Q equal to R 39 If the mass of moon is M 9 81 earth find the distance of the point where gravitational field due to earth and moon cancel each...
- Q 42 A particle of mass m is projected from ground with velocity v making an angle e with vertical Then the debroglie wavelength of particle at the highest point is...
- Q 11 A particle of mass 2kg is moving on a circular path of radius 10m with a speed of 5m s and its speed in increasing at rate of 3m...
- Q The equivalent inductance of the given circuit across AB is O2L O O W P
- Q A current carrying long wire and the rod PQ are in same plane The rod moves parallel to the wire with a velocity v as shown Which of the following...
- Q A ball is thrown vertically upward with a velocity u from the top of a tower If it strikes the ground with velo 3u the time taken by the ball...
- Q The wire loop of radius R shown in the figure carries an anticlockwise current I Magnetic field in x direction is constant in the region B The net torque on...
- Q A dip circle is taken to magnetic equator The needle is allowed to move in magnetic meridian the needle will stay In horizontal direction In vertical direction In any direction...
- Q A spherical shell of radius R carries a uniform surface charge do on the northern hemisphere and uniform surface charge 00 on the southern hemisphere Find the potential inside and...
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